{
  "manageEntity": {
    "action": "Save",
    "entityId": "22508",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x02da742f845addd717ec893be53b0755ea31583903c3bb715a5bc1b6a12f8feb",
    "signature": "0x04f12b90dfb5156cd415ff57e8645d755613417ddfdbe541d5e1e3c2bfa286c3653b9134e6ccda44ab642db1f3323988b8e3896f73cc177cf62b9261dcad54d01c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}